Added root user privilege check for the script

Created by: kaismh

debian7/bin/start-datafari.sh

#!/bin/bash -e
+
+if (( EUID != 0 )); then
+   echo "You need to be root to run this script." 1>&2
+   exit 100
+fi
+
export DATAFARI_HOME=$(pwd)/..
export JAVA_HOME=${DATAFARI_HOME}/jvm
export LD_LIBRARY_PATH=${DATAFARI_HOME}/pgsql/lib